package com.xxx.design.tutorials800;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author Hang
 * @date 2022/7/30
 * @project studydesignpatter
 * @description static
 **/
public class Singleton_00 {
    public static Map<String,String> cache = new ConcurrentHashMap<>();

}
